package main

import "fmt"

func main() {
	const months=3
	const all_month=20
	var saml [months-1]int
	var bigl int
	saml[0]=1
	for i:=1;i<all_month;i++{
		bigl+=saml[i%2]
		saml[i%2]=bigl
		fmt.Printf("第%-3d个月是%-10d只\n", i+1 ,saml[0]+saml[1]+bigl)
	}
}
